package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import com.sky.vo.EmployeeVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 保存员工
     *
     * @param employeeDTO 员工数据
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();

        //对象数据的拷贝
        BeanUtils.copyProperties(employeeDTO, employee);

        //设置拷贝不了隐藏属性
        employee.setStatus(StatusConstant.ENABLE);
        /*employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        //从本地线程的ThreadLocal对象中获取当前登录的id
        Long currentId = BaseContext.getCurrentId();
        employee.setCreateUser(currentId);
        employee.setUpdateUser(currentId);*/

        //设置默认密码
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        employeeMapper.save(employee);
    }

    /**
     * 分页查询
     *
     * @param pageQueryDTO 查询的条件
     * @return
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO pageQueryDTO) {
        //设置分页参数
        PageHelper.startPage(pageQueryDTO.getPage(), pageQueryDTO.getPageSize());
        //2. 调用mapper查询数据
        Employee employee = new Employee();
        BeanUtils.copyProperties(pageQueryDTO, employee);
        Page<Employee> page = employeeMapper.pageQuery(employee);

        //3. 封装返回结果
        PageResult pageResult = new PageResult();
        pageResult.setTotal(page.getTotal());
        pageResult.setRecords(page.getResult());

        return pageResult;
    }

    /**
     * 更新用户的状态
     *
     * @param status 1:正常 0:禁用
     * @param id     用户的id
     */
    @Override
    public void update(Integer status, Long id) {

        Employee employee = Employee.builder()
                .id(id)
                .status(status)
                .build();
        employeeMapper.update(employee);
    }

    /**
     * 根据id查询员工信息
     *
     * @param id
     * @return
     */
    @Override
    public EmployeeVO getById(Long id) {
        Employee employee = employeeMapper.getById(id);

        EmployeeVO vo = new EmployeeVO();
        BeanUtils.copyProperties(employee, vo);

        return vo;
    }

    /**
     * 更新员工
     *
     * @param employeeDTO 最新的员工数据
     */
    @Override
    public void updateEmployee(EmployeeDTO employeeDTO) {

        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);

        /*employee.setUpdateTime(LocalDateTime.now());
        //获取更新的用户
        Long currentId = BaseContext.getCurrentId();
        employee.setUpdateUser(currentId);*/

        employeeMapper.update(employee);
    }

}
